| Affiliation: | 1. Division of Infectious Diseases, Department of Medicine, Johns Hopkins University School of Medicine, Baltimore, Maryland, USA;2. Department of Environmental Health and Engineering, Epidemiology and International Health Johns Hopkins Bloomberg School of Public Health, Baltimore, Maryland, USA;3. Department of Environmental Health and Engineering, Johns Hopkins Bloomberg School of Public Health, Baltimore, Maryland, USA;4. Johns Hopkins Medicine COVID Testing, The Johns Hopkins Medical Institutions, Baltimore, Maryland, USA;5. Division of Geriatric Medicine and Gerontology, Department of Medicine, Johns Hopkins University School of Medicine, Baltimore, Maryland, USA;6. Department of Health Policy and Management, Johns Hopkins Bloomberg School of Public Health, Baltimore, Maryland, USA |
